Adjustable lamp.



P. G. HOWE.

' ADJUsTABLB LAMP.

APPLICATION rninn numegmm.

1,124,903. PatentedJan 12, 1915.

2 SHEETS-81131 1.

P. G. HOWE.-

ADJ m: LAMP. APPLIOATI LED LL26, 1914.

1,124,903. Patented Jan. 915

FEED (J. HOWE; OF NEW HAVEN, CONNECTICUT.

ADJUSTABLE LifMP,

i pccificaticn of Letters Patent,

Patented Jan. 12, 1915.

Application filed march 26, $814. Serial No. 82?,440.

To all whom it may concern; if

a known that I, Feel) C. Howua elatizen oi the United States, residing at New Haven, in the county of Haven and and im- Q proved adjustable lamp, having for its object, among other things, toprovidemeaus for mov ng the lamp into any desired positiou, Within a limited range, about a com current being conducted thereto through a ruou center, and indepeude'uily into a single prede "mined position abouz the some center quickly and easily.

"With these, and oiher objects in view, my invention consists in the adjustable lamp, having certain details of construction, and con'ibiuamons of parts, as Will be. hereinaf described and more particularly pointed sub in the claims.

Referring to the drawings, in which like numerals of reference designate like parts in the several. figures; Figure 1 is a fragmentary side elevation of my improved lamp; Fig- 2 is an end View of the parts shown in 3; Fig. 3 is a side elevation of the cup and guide ball with that portion of the lamp body adjacent thereto; Fig. 4 is e szle elevation of my improved lump, illusirstiug particularly she mechanism for shifting tho lamp body and guide ball as a ueii to a. predetermined position upon one side of the centerof the operahing shaft; Fig. is a similar view with the lamp body and the adjacent, parts in said predetermined posit-ion; Fig. (i is a detail view of a poi'tiou of the two-part shaft; and Fig. 7 is a perspective view of the journal socket.

The invention is illustrated in the drawings as applied to'an electric lamp, but it may be used equally as well for any type of mechanism, wherein it is designed that one of the members ihereof should be moved about a common center. I do not, therefore, desire to be limited in the use of this device 'io a lamp, its particular application thereto in ihis case being merely for the purpose of showing one form or method of the em bodimeot thereof.

in the drawings the lamp body is designated by the numeral 1, within which is an incandescent lump 2 of the ordinary type,

wire

Fixed within the rear end of the body member 1 is the cup member i, Within which is the curved slot 5, having teefih G in one edge 'Lhereof.

The numeral '4" designates a fixed member, within which is a journal 8 that forms a bearing for {the shaft 9 that is rotatably mounted therein. This shaft. is also journaled in a bracket 10, having a thumb screw 11 threaded thereihrough, the inner end of which bears against said shaft. One end of this shaft projects through a guide ball 12 secured thereon, and has a pinion 13 thereon that projects into the slot 5 with theteeth thereon meshing into the teeth 6 in one side of the slot. The center of this guide ball 12 is coincident with the center of the cup a and is held in engagement therewith by the rear end of the body memher 1%, being turned imvardly, as shown par ticularly in 1 and 3, over the rear portion of the ball, so as to insure an in%parable engagement of the cup with bhe body member attached thereto, and said ball.

T he body member is additionally supported by the bracket 1 connected with said body member and the interposed spring 16.

In Figs. 1 and 3 the lamp body is illustrated with its coincident with that of the shaft 9, and is held in such positiouby the contact of the screw 11 with said shaft.

To vary the position of ihe lamp body about the center of the ball 1'3, the shaft 9 is 1'0- ated through the thumb nut 17, and th toothed engagement of the pinion 13 with the toothed side of the slot. 5 positively moves the said lamp body about the center of said ball, the-spring 16 yielding suificieuily to permit this movement. The parts are locked in their several adjusted positions by the screw 11, and returned to their initial positions by unloosening this same screw, at which time the spring 16 will contract and draw the lamp body back to the position shown in Fig- 1, a manual rotation of the shaft 9 facilitating this action if necessary.

There are unlimited uses to which this lamp, as herein described, may be put, but

if :mplicd particularly to automobiles there 

